Philippine President Rodrigo Duterte and US President Donald Trump meet for the first time on the sidelines of the Asia Pacific Economic Cooperation (APEC) in Da Nang, Vietnam on Saturday, November 11, 2017.
The two leaders are also often compared with each other for their tough talk and controversial statements.
"It was a brief meeting".
"Well, I shook his hands, and before the closing (Trump) kept on saying 'buh-bye, '" Duterte said.
When White House reporters traveling with Trump asked whether the issue of human rights had come up at a meeting between the two presidents Monday, both Trump and Duterte declined to respond.
After attending the APEC summit here, Trump is scheduled to visit the Philippines this weekend to attend the 31st Association of Southeast Asian Nations Summit and related meetings.
"It shows I think that the two leaders were genuinely pleased to have finally met each other in person", Roque told reporters.
"I do remember how you had to cut short your visit to Russian Federation due to terrorist attack in your country", Putin said.
But the trip is not likely to end quietly - many are already bracing themselves for Trump's bilateral meeting with Rodrigo Duterte, as the president is not expected to denounce the authoritarian leader's waging of a brutal drug war that has killed thousands of civilians.
Duterte said the arms that came from Russian Federation were very accurate and was able to help neutralize snipers of the ISIS-inspired Maute group. "That's because the US President is flying to the Philippines for the Asean Summit tomorrow", Roque said during a press conference.
"I know that I'd have an interesting time with him", he said in a media interview.
Since Duterte took office 16 months ago, police said more than 3,960 people have been killed in the war on drugs.
"If it's also your problem, then look at it in the aspect of a social problem, then you begin to dig why how many were... how it blossomed into something out of control", he added.
The Palace official said Duterte has had the opportunity to clarify his position on the alleged killings in the Philippines.
A previous Philippines government brought a case against China in the worldwide courts over the country's vast claims to the waters, but Mr Duterte has been far less strident. Philippines Defence Secretary Delfin Lorenzana, Foreign Minister Alan Peter Cayetano as well as Australian Department of Foreign Affairs and Trade Secretary Frances Adamson also attended.
Cayetano, who was accompanied by his wife Taguig City Mayor LaniCayetano, was spotted explaining the President's absence during the welcome ceremony given by Vietnam President Tran Dai Quang.
Mr Duterte's advisers have in the past walked back similar boasts of violent acts by the president, telling journalists not to take what he said at his word.